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Appropriately named for a supercomputer in Texas, the Ranger is a Sun Microsystems computer with 42,440 and turning out 433.20 teraflops. It is housed at the Texas Advanced Computer Center at the University of Texas.
Photo courtesy Texas Advanced Computing Center and AMD.
The second-most powerful German supercomputer, JUROPA, is also owned and operated by Forschungszentrum Juelich but is a Sun Constellation system containing 26,304 cores and doing only 274.80 teraflops.
Photo courtesy Forschungszentrum Juelich.
HECToR, the most powerful British supercomputer, is a Cray XT6m 12-core processor system, but only contains 43,660 cores. It measured at 274.70 teraflops. HECToR, which stands for "High-End Computing Terascale Resource", is housed at the University of Edinburgh in Scotland.
Photo Courtesy the University of Edinburgh.